我有一个"团队"对象的二维数组，当我尝试从 2d 数组打印附加数组时有一个"团队"数组，它给出了错误。在下面的代码中，打印给出错误。
self.first_array = []
for i in 0..<json["LeagueStage"][0]["LeagueTable"].count {
guard let name = json["LeagueStage"][0]["LeagueTable"][i]["name"].string,
let id = json["LeagueStage"][0]["LeagueTable"][i]["id"].int,
let teamId = json["LeagueStage"][0]["LeagueTable"][i]["TeamID"].int,
let points = json["LeagueStage"][0]["LeagueTable"][i]["points"].string,
let played = json["LeagueStage"][0]["LeagueTable"][i]["played"].string,
let wins = json["LeagueStage"][0]["LeagueTable"][i]["wins"].string,
let draws = json["LeagueStage"][0]["LeagueTable"][i]["draws"].string,
let defeits = json["LeagueStage"][0]["LeagueTable"][i]["defeits"].string,
let goalsfor = json["LeagueStage"][0]["LeagueTable"][i]["goalsfor"].string,
let goalsagainst = json["LeagueStage"][0]["LeagueTable"][i]["goalsagainst"].string,
let average = json["LeagueStage"][0]["LeagueTable"][i]["average"].int,
let rank = json["LeagueStage"][0]["LeagueTable"][i]["rank"].int,
let hasTeamLogo = json["LeagueStage"][0]["LeagueTable"][i]["HasTeamLogo"].bool,
let imageUrl = json["LeagueStage"][0]["LeagueTable"][i]["TeamLogo"].string
else {
let dataFetch: [AnyHashable : Any] =
[
NSLocalizedDescriptionKey : NSLocalizedString("Veri Yok", value: "Hata", comment: "") ,
NSLocalizedFailureReasonErrorKey : NSLocalizedString("Veri Yok", value: "Hata", comment: "") ]
let err = NSError(domain: "ShiploopHttpResponseErrorDomain", code: 401, userInfo: dataFetch)
self.delegate?.errorUpdating(err as NSError)
return
}
let temp_team = Team(id: id,
teamId: teamId,
name: name,
points: Int(points)!,
played: Int(played)!,
wins: Int(wins)!,
draws: Int(draws)!,
defeits: Int(defeits)!,
goalsfor: Int(goalsfor)!,
goalsagainst: Int(goalsagainst)!,
average: average,
rank: rank,
HasTeamLogo: hasTeamLogo,
imageurl: imageUrl
)
self.first_array.append(temp_team)
}
}
self.teams.append(first_array)
print(teams[0][0].name)
初始化零件
// MARK: - Variables
var teams = [[Team]]()
var first_array = [Team]()
我确定first_array没有问题，因为当我喜欢下面时，它可以工作。
self.teams = [self.first_array, self.first_array]
错误：
致命错误：索引超出范围
我可以打印它
print(self.teams.popLast()?[0].name)
self.first_array和first_array指的是不同的东西。
如果上面的代码是正确的，那么问题是self.teams与局部变量var teams = [[Team]]()不同。与self.first_array和本地变量first_array相同。希望你明白了重点。
要解决此问题，请执行以下任一操作：
而不是写作 var teams = [[Team]]()
var first_array = [Team]()
写
self.teams = [[Team]]()
self.first_array = [Team]()
或
而不是self.teams.append(self.first_array)，写teams.append(first_array)然后self.teams = teams
我在下面调用有问题的函数的代码。
self.teams = [[]]
我把它改成这个，它现在正在工作。
self.teams = [[],[]]